There is a lot of controversy about how diet affects hair loss and http://Keranique other skin conditions. But since hair takes nutrients from blood flow, which it needs for growth, you should just use common sense to believe that you will need hair loss vitamins, if you want to have healthy hair.
One of the problems in providing hair loss vitamins is if those vitamins are needed else where in your body, your hair will see very little of these vitamins. The hair is one of the last places that vitamins go to. The other problem is if you are not providing enough vitamins and even minerals for your body, from the food you eat, your body will start to pull the vitamins it needs from your hair. But the hair is not the only place vitamins are pulled from, since the body will automatically pull vitamins and minerals from other parts of the body to move them to areas that need them for survival.